90-4y+y=75

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Solution for 90-4y+y=75 equation: 


Simplifying
90 + -4y + y = 75

Combine like terms: -4y + y = -3y
90 + -3y = 75

Solving
90 + -3y = 75

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-90' to each side of the equation.
90 + -90 + -3y = 75 + -90

Combine like terms: 90 + -90 = 0
0 + -3y = 75 + -90
-3y = 75 + -90

Combine like terms: 75 + -90 = -15
-3y = -15

Divide each side by '-3'.
y = 5

Simplifying
y = 5

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